Threaded balloon and balloon catheter

Abstract

The utility model discloses a threaded balloon and a balloon catheter, and relates to the technical field of medical instruments, in particular to a threaded balloon and a balloon catheter, which comprise a balloon and a fixed catheter, the balloon is fixedly sleeved on the surface of the fixed catheter, an expansion component is arranged on the surface of a balloon body corresponding to the balloon, and one end of the fixed catheter is fixedly connected with a connecting ring. A balloon filling opening is formed in the surface of the connecting ring; through the arrangement of a balloon, an expansion assembly, a liquid medicine conveying pipe and a liquid medicine spraying assembly, after the device reaches the lesion position of a patient, the balloon is filled through a balloon filling opening, so that the expansion assembly is supported and embedded in the lesion position of the patient; the liquid medicine conveying pipe is used for conveying the liquid medicine to the liquid medicine spraying assembly and treating the lesion part of the patient, so that the lesion part of the patient is effectively subjected to medicine treatment, the restenosis after the vascular intervention operation of the patient is effectively prevented, and the practicability and applicability of the device are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a threaded balloon and balloon catheter. Background Technology

[0002] Medical devices refer to instruments, equipment, appliances, materials, or other articles used alone or in combination on the human body, including the necessary software. Their therapeutic effects on the human body, whether on the surface or inside, are not achieved through pharmacological, immunological, or metabolic means, but rather through auxiliary functions. During use, they are intended to achieve the following purposes: prevention, diagnosis, treatment, monitoring, and alleviation of diseases; diagnosis, treatment, monitoring, alleviation, and compensation for injuries or disabilities; research, replacement, and regulation of anatomical or physiological processes; pregnancy control.

[0003] Aortic stenosis (AS) is a type of heart disease. Percutaneous balloon aortic valvuloplasty is one of the more effective measures. The basic procedure is as follows: through interventional techniques, a balloon catheter is inserted into the stenotic area of ​​the aorta. The balloon is dilated to break up the junction, break up the calcified plaque, elongate the stiff leaflets, and enlarge the valve annulus.

[0004] A threaded balloon and balloon catheter are commonly used devices in the treatment of cardiovascular diseases. In the process of treating lesions with traditional aortic balloon dilation catheters, most methods involve spraying a coating drug that inhibits cell proliferation onto the surface of the balloon. After the balloon is dilated, the drug is rapidly transferred from the balloon surface to the blood vessel wall to inhibit endothelial cell proliferation. However, after the balloon enters the blood vessel through the connector, some of the drug is lost due to friction, and some is also lost due to blood flow. After balloon dilation, some of the drug on the balloon surface is still lost, and ultimately only a small amount of drug is coated onto the blood vessel wall and utilized, affecting the treatment effect. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a threaded balloon and balloon catheter, which solves the problems mentioned in the background art, such as the loss of some drugs due to friction after the balloon enters the blood vessel through the connector; the loss of some drugs due to blood flow scouring; and the loss of drugs on the balloon surface after balloon expansion, resulting in a limited amount of drugs that can ultimately be coated on the blood vessel wall and utilized, thus affecting the treatment effect.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a threaded balloon, including a fixed catheter, characterized in that: a connecting ring is fixedly connected to one end of the fixed catheter, an expansion component is provided on the surface of the fixed catheter away from the connecting ring, a balloon inflation port is provided on the surface of the connecting ring, and a drug delivery tube is provided inside the fixed catheter corresponding to the connecting ring.

[0007] Furthermore, the expansion assembly includes an expansion ring fitted onto the surface of the fixed conduit. The expansion assembly has two rings, and an expansion frame is provided between the two expansion rings. The expansion frame contains a liquid spraying assembly.

[0008] Furthermore, the liquid spraying assembly includes multiple liquid delivery chambers opened inside the extension frame, and several liquid discharge ports evenly and equidistantly arranged are opened in the middle of the surface of the extension frame, and a communicating cavity is opened inside the extension ring.

[0009] Furthermore, multiple liquid delivery chambers are arranged in a ring array inside the expansion frame. The liquid outlet on the surface of the expansion frame is connected to the liquid delivery chamber inside the expansion frame. The two ends of the connecting channel inside the expansion ring are connected to the liquid delivery chamber and the liquid delivery pipe, respectively.

[0010] A balloon catheter comprising a threaded balloon, and further comprising:

[0011] A balloon is fixedly fitted onto the surface of a fixed catheter, the fixed catheter having a guidewire inside, and the balloon corresponding to and located within the expansion assembly.

[0012] Furthermore, a blood passage is formed on the surface of the fixed catheter near the balloon. There are four blood passages, which are arranged in a rectangular array inside the fixed catheter. One end of the drug delivery tube passes through the connecting ring and extends to the outside.

[0013] This utility model provides a threaded balloon and balloon catheter, which have the following beneficial effects:

[0014] 1. This threaded balloon and balloon catheter, through the arrangement of the balloon, balloon inflation port, expansion component, drug delivery tube, and drug spraying component, allows the balloon to be inflated through the inflation port after reaching the patient's lesion, thus supporting the expansion component and embedding it in the lesion. The drug delivery tube then delivers medication to the drug spraying component to treat the lesion, effectively treating the lesion and preventing restenosis after vascular intervention. This significantly improves the practicality and applicability of the device. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the extension component of this utility model;

[0018] Figure 3 This is a partial cross-sectional structural diagram of the extension component of this utility model;

[0019] Figure 4 This is a partial cross-sectional view of the fixed conduit structure of this utility model;

[0020] Figure 5 This is a partial three-dimensional structural diagram of the extension component of this utility model;

[0021] Figure 6 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0022] In the diagram: 1. Balloon; 2. Fixed catheter; 3. Expansion assembly; 31. Expansion ring; 32. Expansion frame; 4. Connecting ring; 5. Balloon inflation port; 6. Drug delivery tube; 7. Drug spraying assembly; 71. Drug delivery chamber; 72. Drug discharge port; 73. Connecting cavity; 8. Guide wire; 9. Blood access cavity. Detailed Implementation

[0023] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0024] Please see Figures 1 to 6This utility model provides a technical solution: a threaded balloon, including a fixed catheter 2, a balloon 1 fixedly sleeved on the surface of the fixed catheter 2, the balloon 1 corresponding to and located inside the expansion component 3, the expansion component 3 is provided on the surface of the fixed catheter 2 away from the connecting ring 4, through the setting of the expansion component 3, the balloon 1 is expanded when inflated, so that it is embedded in the lesion of the patient, thereby providing a certain support for the balloon 1, and reducing the possibility of compression deformation after the balloon 1 is inflated, one end of the fixed catheter 2 is fixedly connected to the connecting ring 4, the surface of the connecting ring 4 is provided with a balloon inflation port 5, through the setting of the balloon inflation port 5, after the device reaches the lesion of the patient, the balloon 1 is inflated by the balloon inflation port 5, and a drug delivery tube 6 is provided inside the fixed catheter 2 corresponding to the connecting ring 4, through the cooperation of the drug delivery tube 6 and the drug spraying component 7, the lesion of the patient is effectively treated with drugs, thereby effectively preventing restenosis after vascular intervention, thus effectively improving the practicality and applicability of the device.

[0025] The expansion component 3 includes an expansion ring 31 fitted onto the surface of the fixed catheter 2. The expansion component 3 has two rings, with the two expansion rings 31 located on both sides of the balloon 1. An expansion frame 32 is provided between the two expansion rings 31. The expansion frame 32 has a drug spraying component 7 inside. The expansion frame 32 includes tapered sections on both sides and a straight section in the middle. The surface of the straight section has symmetrically arranged inclined surfaces. The drug outlet 72 is located on the inclined surface of the straight section.

[0026] The liquid spraying assembly 7 includes multiple liquid delivery chambers 71 opened inside the extension frame 32, and several liquid discharge ports 72 evenly and equidistantly arranged are opened in the middle of the surface of the extension frame 32. The extension ring 31 has a connecting cavity 73 inside.

[0027] Multiple drug delivery chambers 71 are arranged in a ring array inside the expansion frame 32. The drug outlet 72 on the surface of the expansion frame 32 is connected to the drug delivery chambers 71 inside the expansion frame 32. The two ends of the connecting channel 73 inside the expansion ring 31 are connected to the drug delivery chambers 71 and the drug delivery tube 6, respectively. When the device reaches the patient's lesion, the balloon 1 is inflated using the balloon inflation port 5, so that it supports the expansion component 3 and embeds it in the patient's lesion. Then, the drug is delivered to the connecting channel 73 through the drug delivery tube 6, and finally delivered to the lesion through the drug outlet 72 via the drug delivery chamber 71 for treatment. This effectively treats the patient's lesion and prevents restenosis after vascular intervention, thus effectively improving the practicality and applicability of the device.

[0028] The fixed catheter 2 has a guide wire 8 inside, and four blood passages 9 are opened on the surface of the fixed catheter 2 near the balloon 1. The four blood passages 9 are arranged in a rectangular array inside the fixed catheter 2. One end of the drug delivery tube 6 passes through the connecting ring 4 and extends to the outside. After the balloon 1 is inflated, the blood in the patient's lesion will flow through the blood passages opened in the fixed catheter 2, thereby avoiding the problem of blood flow interruption caused by the blockage of blood vessels after the balloon 1 is expanded. This effectively reduces the risk of complications caused by blood flow interruption and improves the operability and safety of the operation.

[0029] In the description of this specification, the terms "connection", "installation", "fixing", "setting", etc. are interpreted in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. In such cases, those skilled in the art can understand the specific meaning of the above terms in this utility model or utility model according to the specific circumstances.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A threaded balloon comprising a fixed catheter (2), characterized in that, One end of the fixed catheter (2) is fixedly connected with a connecting ring (4), the surface of the fixed catheter (2) away from the connecting ring (4) is provided with an expansion assembly (3), the surface of the connecting ring (4) is provided with a balloon inflation port (5), the inside of the fixed catheter (2) corresponding to the connecting ring (4) is provided with a liquid medicine delivery pipe (6); The expansion assembly (3) includes an expansion ring (31) sleeved on the surface of the fixed catheter (2), the number of the expansion assembly (3) ring is two, the expansion assembly (3) is provided with an expansion frame (32) between the two expansion rings (31), the inside of the expansion frame (32) is provided with a liquid medicine spraying assembly (7); The liquid medicine spraying assembly (7) includes a plurality of liquid medicine delivery cavities (71) opened in the inside of the expansion frame (32), a plurality of liquid medicine discharge ports (72) are uniformly and equidistantly arranged in the middle of the surface of the expansion frame (32), and a communication cavity (73) is opened in the inside of the expansion ring (31). A plurality of the liquid medicine delivery cavities (71) are annularly arranged in the inside of the expansion frame (32), the liquid medicine discharge ports (72) opened in the surface of the expansion frame (32) are in communication with the liquid medicine delivery cavities (71) opened in the inside of the expansion frame (32), and the two ends of the communication cavity (73) opened in the inside of the expansion ring (31) are in communication with the liquid medicine delivery cavities (71) and the liquid medicine delivery pipe (6) respectively.

2. A balloon catheter comprising a threaded balloon according to claim 1, characterized in that Further comprising: A balloon (1) is fixedly sleeved on the surface of the fixed catheter (2), the inside of the fixed catheter (2) is provided with a guide wire (8), the balloon (1) corresponds to the expansion assembly (3) and is located in the inside of the expansion assembly (3).

3. The balloon catheter of claim 2, wherein, The surface of the fixed catheter (2) near the balloon (1) is provided with four blood passage cavities (9), the four blood passage cavities (9) are annularly arranged in the inside of the fixed catheter (2), and one end of the liquid medicine delivery pipe (6) penetrates through the connecting ring (4) and extends to the outside.

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